
    *{
        padding:0;
        margin:0 ;
    }
    .contain{
        margin: 0 auto;
        width: 305px;
        position: relative;
        background: gray;
        margin-top: 119px;
        padding-left: 111px;
        z-index: 2;
    }
    .contain input{
        font-size: 16px;
        height: 25px;
        color: #333;
        border-radius: 5px;
        border:1px solid #ccc;
        outline:none;
    }
    .contain p{
        display: block;
        font-size: 12px;
        margin: 0;
        color: #ccc;
    }
    .contain #btn1{
        cursor: pointer;
        width: 100px;
        height: 37px;
        line-height: 37px;
        text-align: center;
        color:white;
        font-weight: bold;
        background-color: yellowgreen;
        border: 1px solid rgb(66, 164, 43);
        border-radius: 5px;
        outline: none;
    }
    #big{
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        background-size:cover;
    }